Control of the functionality of graphene oxide for its application in epoxy nanocomposites

Li, Zheng; Wang, Rongguo; Young, Robert J.; Deng, Libo; Fan, Yang; Hao, Lifeng; Jiao, Weicheng; Liu, Wenbo

doi:10.1016/j.polymer.2013.09.054

Cited by 270 publications

(169 citation statements)

References 45 publications

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“…The flexibility of the interface between the filler and the matrix plays a major role on the glass transition temperature of the composite materials [46]. From the findings presented here, it can be deduced that the interface formed in the PP-GF set of materials is more flexible than the one formed for the PP-GNP.…”

Section: Dynamic Mechanical Analysismentioning

confidence: 61%

Hybrid multifunctional graphene/glass-fibre polypropylene composites

Papageorgiou

Kinloch

Young

2016

Composites Science and Technology

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105

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The effect of the simultaneous addition, using a melt-mixing procedure, of glass fibres (GFs) and graphene in the form of graphene nanoplatelets (GNPs) upon the properties of polypropylene (PP) has been studied in detail. Composite samples containing GFs and GNPs alone were also prepared for comparative purposes. The crystalline microstructure of the composites was characterised by X-ray diffraction (XRD), while scanning electron microscopy (SEM) was used to study the interface between the matrix and the fillers. The orientation of the glass fibres was evaluated using SEM while polarized Raman spectroscopy was utilized to determinate the orientation of the GNPs in the composite samples. The mechanical properties of the composites were evaluated by tensile testing and it was found that the Young's modulus of the hybrid material is higher than that of the materials containing the fillers individually, showing an additive effect. Raman spectroscopy employed simultaneously with deformation of the composites was used to show that there was good interfacial stress transfer between the PP matrix and the GNPs. Finally, the thermal conductivity of the materials was measured and found to be significantly higher for the composites containing GNPs alone.

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Section: Dynamic Mechanical Analysismentioning

confidence: 61%

Hybrid multifunctional graphene/glass-fibre polypropylene composites

Papageorgiou

Kinloch

Young

2016

Composites Science and Technology

Self Cite

105

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“…All samples showed a single exothermic peak at a high temperature, more than 150°C, originating from the decomposition of functional groups in the epoxy-based composites [18]. The main exothermic peaks of RGO/epoxy nanocomposites were observed to be at a higher temperature than those for neat-epoxy composites.…”

Section: Resultsmentioning

confidence: 93%

“…The incorporation of various nano-sized reinforcements into an epoxy matrix can maximize the advantages of structural composites [13][14][15]. Remarkable improvements in physical and mechanical properties of polymer composites have been reported upon the addition of a small amount of graphene [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of chemically reduced graphene oxide on epoxy nanocomposites for flexural behaviors

Lee¹,

Chong²,

Kim³

et al. 2014

Carbon letters

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In this work, nanocomposites of epoxy resin and chemically reduced graphene oxide (RGO) were prepared by thermal curing process. X-ray diffractions confirmed the microstructural properties of RGO. Differential scanning calorimetry was used to evaluate the curing behaviors of RGO/epoxy nanocomposites with different RGO loading amounts. We investigated the effect of RGO loading amounts on the mechanical properties of the epoxy nanocomposites. It was found that the presence of RGO improved both flexural strength and modulus of the epoxy nanocomposites till the RGO loading reached 0.4 wt%, and then decreased. The optimum loading achieved about 24.5 and 25.7% improvements, respectively, compared to the neat-epoxy composites. The observed mechanical reinforcement might be an enhancement of mechanical interlocking between the epoxy matrix and RGO due to the unique planar structures.

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“…have attracted considerable interest due to the significantly improved properties that may be attained [14,15]. However, the full potential of carbon nanomaterials is yet to be realized due to difficulties of dispersing and aligning such additives in polymers [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

A novel route for tethering graphene with iron oxide and its magnetic field alignment in polymer nanocomposites

Zhang

Ladani

et al. 2016

Polymer

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We present a new route for tethering graphene nanoplatelets (GNPs) with Fe 3 O 4 nanoparticles to enable their alignment in an epoxy using a weak magnetic field. The GNPs are first stabilised in water using poly(vinylpyrrolidone) (PVP) and Fe 3 O 4 nanoparticles are then attached via coprecipitation. The resultant Fe 3 O 4 /PVP-GNPs nanohybrids are superparamagnetic and can be aligned in an epoxy resin, before gelation, by applying a weak magnetic field as low as 0.009 T.A theoretical model describing the alignment process is presented. The resulting nanocomposites exhibit anisotropic properties with significantly improved electrical conductivities (three orders of magnitude) in the alignment direction and dramatically increased fracture energy (about 530%) when the nanohybrids are aligned transverse to the crack growth direction, compared with the unmodified epoxy. Compared with the randomly-oriented nanocomposites, these aligned nanocomposites show approximately 50% increase in toughness transverse to the alignment direction and a seven-fold increase in electrical conductivity in the alignment direction.

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Control of the functionality of graphene oxide for its application in epoxy nanocomposites

Cited by 270 publications

References 45 publications

Hybrid multifunctional graphene/glass-fibre polypropylene composites

Hybrid multifunctional graphene/glass-fibre polypropylene composites

Effect of chemically reduced graphene oxide on epoxy nanocomposites for flexural behaviors

A novel route for tethering graphene with iron oxide and its magnetic field alignment in polymer nanocomposites

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